U1039 - SCP (J1850) Invalid Or Missing Data For Vehicle Speed

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U1039 - SCP (J1850) INVALID OR MISSING DATA FOR VEHICLE SPEED

Description:
Possible Causes:	Network DTC(s) occur during module-to-module communication concerns. Two types of network concerns can be categorized: Invalid data network concerns - data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern. Missing message network concerns - missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period.
Diagnostic Aids:	Carry out the on-board diagnostics for the associated network module. For additional information concerning the description and operation of the vehicle communication network, refer to the appropriate MODULE COMMUNICATIONS NETWORK article.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	Refer to the appropriate VEHICLE DYNAMIC SYSTEMS article.